Meeting the Challenges for Wireless Sensor Network Deployment in Buildings
Costas Daskalakis,
Nikos Sakkas,
Maria Kouveletsou
Issue:
Volume 1, Issue 1, February 2013
Pages:
9-1
Published:
20 February 2013
DOI:
10.11648/j.ijssn.20130101.11
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Abstract: Wireless sensor networks (WSNs) in buildings are faced with transmission issues, much more severe than those of outdoor applications. Next to the transmission effective range, battery lifetime is also of a high importance, as it can sig-nificantly affect network performance and maintenance requirements. In this paper we present an architectural concept, in fact a dynamic routing protocol, for the setup of a building WSN. Three key goals have underpinned the protocol design; ability to cost efficiently address transmission distance within buildings, acceptable battery longevity, typically up to a year, and no data loss. Experimental data have been collected over a period of several months and have demonstrated the much enhanced performance of the network, when compared to the performance before the protocol implementation.
Abstract: Wireless sensor networks (WSNs) in buildings are faced with transmission issues, much more severe than those of outdoor applications. Next to the transmission effective range, battery lifetime is also of a high importance, as it can sig-nificantly affect network performance and maintenance requirements. In this paper we present an architectural con...
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Running Consistent Parallel Experiments in Vehicular Environment
Jui-Ting Weng,
Ian Ku,
Giovanni Pau,
Mario Gerla
Issue:
Volume 1, Issue 1, February 2013
Pages:
10-20
Published:
20 February 2013
DOI:
10.11648/j.ijssn.20130101.12
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Abstract: The dynamic nature of vehicular ad-hoc networks (VANETs) makes performance comparisons hard, because network conditions cannot be replicated. This paper introduces PepNet (Parallel Experiment Platform for VANET), a VANET testbed where multiple experimental configurations run simultaneously on identical network conditions. PepNet exploits Xen and Gentoo to provide a virtualized environment at every node. Atop the virtualized environment, multiple virtual guests, each are carrying an independent experiment, run in parallel sharing the same physical resources. The contributions of this paper are three-fold. (1) Virtual machines run various experiments simultaneously, so that each set of experiments encounters identical network conditions and thus produces consistent results. (2) Fewer physical machines are required. (3) Experiments are more consistent, easier to control, and the results are easier to interpret. To demonstrate the efficacy of PepNet, two well-known ad-hoc routing protocols, AODV and OLSR, are tested. Experiments confirm the results published in several previous studies, while the new testbed is more efficient and gives more consistent results.
Abstract: The dynamic nature of vehicular ad-hoc networks (VANETs) makes performance comparisons hard, because network conditions cannot be replicated. This paper introduces PepNet (Parallel Experiment Platform for VANET), a VANET testbed where multiple experimental configurations run simultaneously on identical network conditions. PepNet exploits Xen and Ge...
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